- 2.5 INCH WOOFER ALUMINIUM VOICE COIL
 
- 1.75 INCH COMPRESSION EDGEWOUND CCA VOICE COIL
 
- 95 dB/SPL SENSITIVITY
 
- 600 WATT PROGRAM POWER HANDING
 
- FEM OPTIMIZED MOTOR AND SUSPENSIONS
 
- OPTIMIZED COOLING SYSTEM
 
- RESONANCE FREE AND HEAVY DUTY BASKET DESIGN

Nominal diameter	311(12) mm (in.)
Nominal impedance	8 Ω
Minimum impedance	5.8 Ω
Program power (1)	600 W
AES Power rating(2)	300 W
Sensitivity (3)	95 dB
Frequency range	52 ~ 3500 Hz
Voice coil diameter	65(2.5) mm (in.)
Chassis material	Aluminium
Magnet material	Ferrite
Magnet dimensions (ODxIDxh)	180 x 90 x 20 mm
Coil material	ALR
Former material	Glass Fiber
Xmax(4)	6 mm
Xmech(5)	10 mm
Gap height	8 mm
Voice coil Winding height	16 mm
Diaphragm material	Polymer Materials
Program power(1)	120 W
AES Power rating(2)	60 W
Sensitivity(3)	106 dB
Frequency range	1200 ~ 18000 Hz
Voice coil diameter	44(1.75) mm (in.)
Coil material	CCAR

DC resistance(Re)	5.1 Ω
Resonance frequency(Fs)	52 Hz
Moving mass(Mms)	52 g
Compliance(Cms)	0.18 mm/N
Force factor(BL)	11.80 N/A
Mechanical Q-factor(Qms)	6.8
Electrical Q-factor(Qes)	0.7
Total Q-factor(Qts)	0.64
Equivalent air volume(Vas)	88 I
Voice coil Inductance(Le)	0.16 mH
Diaphragm area(Sd)	581 cm2
Reference efficiency(Eta O)	1.5 %

Net weight	5.5 Kg
Multipack size (1) (W x D x H)	325 x 325 x 195 mm
Multipack weight	6.1 Kg

(1)Program power is defined as 3 dB greater than AES Power.
(2) Tested for two hours using a continuous, band-limited pink noise signal as per AES 2-1984 Rev. 2003. Loudspeaker tested in free air.
(3) From T/S parameters, measured with LMS DA LPM module.
(4) The Xmax is calculated as: (Hvc - Hg)/2+ Hg/4. Hvc is the voice coil height and Hg the gap height.
(5) The Xmech is calculated as: (Hvc - Hg)/2 +(Hg-2). Hvc is the voice coil height and Hg the gap height.
(6) Thiele-Small parameters are measured after preconditioning: a) at 20°C- 22°C, 50% humidity for 2 hours; b) by LMS LSI measurement.